[ 1 ] check whether -3 and 3 are the zeroes of the polynomial x² - 9.

Mathematics

1 answer:

rusak2 [61]3 years ago

5 0

Answer:

x² - 9 = 0
x² = 9
x = ± √9
x = ± 3

Yes, -3 and 3 are zeroes of this polynomial

<em>See attached graphs</em>

Zero's of a polynomial are the intersection of the graph with the x-axis.

They include coordinates as (x, 0), so the x-coordinates are zero's.

The attached shows the zero's.

<em>See attached graphs</em>

Zero's of each polynomial are reflected in the graphs.

() y = x² - x - 6 has zeros x = -2 and x = 3
(ii) y = 6 - x - x² has zero's x = -3, x = 2

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